C'est la première chose à faire.
brancher la carte.
lancer la commande dmesg
poster le résultat :
[50515.764518] usb 3-2.1: new full-speed USB device number 3 using xhci_hcd
[50515.891963] usb 3-2.1: New USB device found, idVendor=0403, idProduct=6001, bcdDevice= 6.00
[50515.891973] usb 3-2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[50515.891977] usb 3-2.1: Product: FT232R USB UART
[50515.891979] usb 3-2.1: Manufacturer: FTDI
[50515.891981] usb 3-2.1: SerialNumber: AL01810C
[50515.918175] usbcore: registered new interface driver usbserial_generic
[50515.918206] usbserial: USB Serial support registered for generic
[50515.919955] usbcore: registered new interface driver ftdi_sio
[50515.919961] usbserial: USB Serial support registered for FTDI USB Serial Device
[50515.920029] ftdi_sio 3-2.1:1.0: FTDI USB Serial Device converter detected
[50515.920046] usb 3-2.1: Detected FT232RL
[50515.927051] usb 3-2.1: FTDI USB Serial Device converter now attached to ttyUSB0